Pneumatic-tire-casing repair plug



May 15, 1928.

E. COOK PNEUMATIC TIRE CAS'ING REPAIRPLUG Filed Sept. 20, 1927 7u ene 000.717

f? gram V601 Patented May 15, 1928.

EUGENE COOK, 0F PAULS VALLEY, OKLAHOMA.

PNEUMATIC-TIRE-CASING REPAIR PLUG.

Application filed September 20, 1927. Serial No. 220,754.

This invention relates to a plug especially designed for use in pluggingholes made in tire casings by nails, glass or pebbles working throughthe casing.

An important object of the invention is to provide means whereby holeson the tire casings may be plugged to prevent foreign matter such asdirt, gravel,water or the like from entering the casing to puncture ordeteriorate the inner tube housed by the easmg. a

A further object of the invention is to provide a device of thischaracter which may be readily and easily positioned by personsunfamiliar with the art of repairing tires, thereby reducing the cost ofrepairing or reconditioning the tire casing, to the minimum.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the comblnation andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed, may be made within thescope of what is'claimed, without departing from the spirit of theinvention.

Referring to the drawing:

Figure 1 is an elevational view of a needle, the plug being shown inperspective.

Figure 2 is a vertical sectional view through a needle constructed inaccordance with the inventionand showing the same as positioned in acasing. r

Figure 3 is a view illustrating the plug in position in an opening ofthe casing.

Figure 4 is a sectional view taken on line 4- of Figure 2.

Figure 5 is a sectional view taken on line 5-5 of Figure 2.

Referring to the drawing in detail, the device forming the essence ofthe invention is inthe form of a plug which includes a large baseindicated by the reference character 5, the same being preferablycircular in formation. Y

Extending from the central portion of the base, is a shank 6 on which isformed a flat head 7 which is of a diameter considerably less than thediameter of the base 5 as clearly shown by the drawing. It will of coure be u d rstood th t h plug is c n structed of rubber and may be formedin various sizes so that plugs are provided for various sized openings,and for casings of various thicknesses, the length of the shank beingequal to the thickness of the casing with which the plug is used.

The plug is positioned by means of a me dle such as indicated by Figure1 of the drawing, and as shown, this needle includes an elongatedtapered body portion indicated by thereference character 8. One end ofthe needle is hollow and split as at 9, the split portions being cutaway at 10 defining a contracted spring portion 11 that normally acts tourge the end 12 inwardly to clamp an article positioned between thesplit end. Secured to the contracted portion is a rod that braces thecontracted portion of the needle to stiffen the contracted portion.

In the use of the device, the opening to be filled by the plug isthoroughly cleaned by a gasoline rag. The needle is now brought intoplay and the head of the plug is rolled so that it may be positionedbetween the jaws of the needle.

The plug is now tho-roughly coated with cement or other adhesivematerial and the needle is forced through the openin'g in the casingfrom the inside of the casing and the plug is pulled into position toclose the opening as s own by the drawing.

It will of course be obvious that the air pressure within the inner tubeacting against the base of the plug will force the base of the plug intoclose engagement with the casing, filling the opening or cut in the tireto prevent foreign matter from entering the casing to puncture or outthe inner tube.

I claim:

A plug including a body portion constituting an enlarged rubber base, ashank extending from the central portion of the base, said shank beingof a length equal to the thickness of the casing with which the plug isused, an enlarged flat head portion formed of thin rubber, and said headand shank adapted .to be threaded through an In testimony that I claimthe foregoing EUGENE: C001;

opening in a tire casing to plug the opening.

